CN220400838U - Coupling assembling, battery package and consumer - Google Patents

Abstract

The application provides a connecting assembly, a battery pack and electric equipment, wherein the connecting assembly comprises a conductive piece, the conductive piece is used for being electrically connected with a battery cell, and the conductive piece is provided with a connecting part; the connecting piece is used for being connected between the connecting part and the sampling wire harness, one end, connected with the connecting part, of the connecting piece is provided with a fixing part, and the fixing part is used for keeping the relative position of the connecting piece and the connecting part. According to the connecting assembly, the connecting part is arranged on the conductive part, meanwhile, the fixing part is matched with the connecting part, the fixing part and the connecting part are mutually fixed, the relative position between the conductive part and the connecting part is limited, the conductive part is prevented from being displaced relative to the connecting part, the subsequent expansion of the welding process between the conductive part and the connecting part is facilitated, and the mounting efficiency is improved.

Description

Coupling assembling, battery package and consumer

Technical Field

The application relates to the technical field of new energy, in particular to a connecting component, a battery pack and electric equipment.

Background

The battery pack generally needs to be provided with a connecting component to transmit the electric signals of the battery core electrode posts to the acquisition unit, and the acquisition unit analyzes, stores and exchanges the received electric signals with external equipment so as to monitor the states of all the battery cores in real time and avoid the adverse phenomena of overcharging, overdischarging, overhigh temperature and the like of the battery cores.

Current common connection assemblies typically include a conductive member and a connection member welded to the conductive member. When the conductive member is welded to the connecting member, an auxiliary jig is usually required or a riveting method is adopted to fix the connecting member. The auxiliary jig is used to make the operation in the welding process relatively complex, and the riveting method is adopted to possibly cause the rotation of the connecting piece, so that difficulties are brought to the installation process of the conductive piece and the connecting piece, and the installation efficiency is reduced.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide a connection assembly and a battery pack, so as to simplify the installation process of the conductive member and the connection member and improve the installation efficiency of the conductive member and the connection piece.

In a first aspect, the present application provides a connection assembly connected between a sampling harness and a cell, comprising: the conductive piece is used for being electrically connected with the battery cell and is provided with a connecting part; the connecting piece is used for being connected between the connecting part and the sampling wire harness, one end, connected with the connecting part, of the connecting piece is provided with a fixing part, and the fixing part is used for keeping the relative position of the connecting piece and the connecting part.

The connecting part is arranged on the conductive piece electrically connected with the battery cell, so that the connecting piece can be electrically connected with the conductive piece, and the electric signal of the battery cell is conveyed to the connecting piece through the conductive piece. And then the connecting piece is connected with the sampling wire harness, so that an electric signal transmitted to the connecting piece is transmitted out through the sampling wire harness. Meanwhile, the fixing part is arranged at one end of the connecting piece, which is connected with the connecting part of the conductive piece, and the fixing part is used for keeping the relative positions of the connecting piece and the connecting part, so that the connecting piece is fixed on the conductive piece.

According to the connecting assembly, the connecting part is arranged on the conductive part, meanwhile, the fixing part is matched with the connecting part, the fixing part and the connecting part are mutually fixed, the relative position between the conductive part and the connecting part is limited, the conductive part is prevented from being displaced relative to the connecting part, the subsequent expansion of the welding process between the conductive part and the connecting part is facilitated, and the mounting efficiency is improved.

In one embodiment, the connecting piece comprises two fixing parts and a connecting sheet connected between the two fixing parts, and the two fixing parts are respectively connected with the connecting part.

In this embodiment, the connecting piece is disposed in the connecting piece, and the number of the fixing portions is two, where the connecting piece is used to connect the two fixing portions, and the two fixing portions are used to connect with the connecting portion of the conductive piece, so as to increase the connection surface between the connecting piece and the conductive piece, and thus improve the connection reliability between the conductive piece and the connecting piece.

In one embodiment, the holding portion includes a first connecting surface, and the connecting portion includes a second connecting surface, and the first connecting surface abuts against the second connecting surface.

In this embodiment, the first connection surface is disposed at the fixing portion, and the second connection surface is disposed at the connection portion in a matching manner, so that the first connection surface and the second connection surface are abutted to define a position between the conductive member and the connection member, so that the conductive member and the connection member can be prevented from rotating when the connection member is mounted to the conductive member, the mounting process of the conductive member and the connection member can be simplified, and the mounting efficiency of the conductive member and the connection member can be improved.

In one embodiment, the connecting portion includes a protrusion, and the two holding portions are located at two sides of the protrusion to fix the connecting member.

In the embodiment, the connecting part is arranged to be the bulge, and the two fixing parts are arranged at two sides of the bulge, so that the two fixing parts can be matched and limited to the position between the conductive piece and the connecting piece, and the connection reliability of the conductive piece and the connecting piece is further improved.

In one embodiment, the connecting portion includes a groove, and the two holding portions respectively abut against an inner surface of the groove to fix the connecting member.

In the present embodiment, the connecting part is configured as a groove, and two holding parts are respectively abutted against the inner surface of the groove, i.e. the two holding parts are respectively abutted against the second connecting surface, so as to ensure the reliability of the connecting piece

In one embodiment, the holding portion has elasticity.

In the embodiment, the fixing part has elasticity, so that the installation of the conductive piece and the connecting piece is facilitated by utilizing the deformation recovery capability of the elastic fixing part, and meanwhile, the reliable abutting of the fixing part and the connecting part can be ensured.

In one embodiment, the connector includes a pre-bent section connected between the connecting piece and the holder.

In the embodiment, the pre-bending section is arranged at the connection part of the side wall of the connecting sheet and the fixing part to serve as a transition structure, so that stress concentration is reduced, and the risk of fracture at the connection part of the side wall of the connecting sheet and the fixing part is reduced.

In one embodiment, the pre-bent section has an arcuate cross-sectional shape.

In one embodiment, the connection portion includes a protrusion, and a minimum distance between the two holding portions is smaller than a width dimension of the protrusion.

In the embodiment, the protrusions are arranged on the basis of the conductive piece, and the fixing parts are elastic, so that the minimum distance between the two fixing parts is smaller than the width dimension of the protrusions, and meanwhile, the two fixing parts clamp the two sides of the protrusions, and the elastic deformation function of the fixing parts is utilized to enable the fixing parts to be in automatic press fit with the outer surfaces of the protrusions, so that the connecting piece is fixed.

In one embodiment, the connecting portion includes a groove, and a maximum distance between the two holding portions is greater than a width dimension of the groove, and the two holding portions respectively abut against an inner surface of the groove to fix the connecting member.

In the embodiment, the groove is formed based on the conductive piece, and the fixing part has elasticity, and the maximum distance between the two fixing parts is larger than the width dimension of the groove, so that the two fixing parts are abutted against the inner surface of the groove, and the elastic deformation function of the fixing part is utilized to enable the fixing part to be in automatic press fit with the inner surface of the groove, so that the connecting piece is fixed.

In one embodiment, the conductive member includes a bump disposed on an outer surface of the bump or an inner surface of the groove, the bump protruding toward the holding portion; the fixing part comprises a hollow area, the position of the hollow area is correspondingly matched with the position of the protruding block, and the protruding block is used for extending into and propping against the hollow area so as to limit the relative position of the conductive piece and the connecting piece.

In this embodiment, the bump is disposed on the outer surface of the protrusion or the inner surface of the groove, and the hollow area is disposed at the position of the holding portion corresponding to the bump in a matching manner, and the bump extends toward the holding portion, so that the bump can extend into the hollow area. The lug is propped against the hollow area to avoid the connecting piece from moving towards the direction away from the conductive piece, so that the relative position of the conductive piece and the connecting piece can be further limited.

In one embodiment, the hollowed-out portions of the two holders have their projections on one of the holder surfaces partially overlapping or spaced apart.

In this embodiment, the conductive member includes a bump, and the projection portions of the hollow areas or the bosses of the two fixing portions on the surface of one of the fixing portions overlap or are spaced apart from each other, so that the shapes of the hollow areas or the bosses of the two fixing portions are different or the positions of the hollow areas or the bosses of the two fixing portions are different, so that the connecting member is mounted at a preset position in a preset posture, and the connecting member is prevented from being reversely mounted.

In one embodiment, the conductive member includes a clamping groove, the clamping groove is arranged on the outer surface of the protrusion or the inner surface of the groove, and the clamping groove is recessed towards the inner surface of the protrusion or the groove; the fixing part comprises a boss, the position of the boss is correspondingly matched with the position of the clamping groove, and the boss is used for extending into and propping against the clamping groove so as to limit the relative position of the conductive piece and the connecting piece.

In the present embodiment, the card slot is formed by recessing the outer surface of the protrusion or the inner surface of the groove in a direction away from the holding portion. Meanwhile, a boss is arranged at the position of the fixing part corresponding to the clamping groove in a matching way, so that the boss can extend into the clamping groove. The boss is abutted against the clamping groove, so that the connecting piece is prevented from moving towards the direction away from the conductive piece, and the relative position of the conductive piece and the connecting piece can be further limited.

In one embodiment, the projections of the two holders overlap or are spaced apart from each other in the projection of one of the holders.

In this embodiment, the conductive member includes a clamping groove, and the projection portions of the hollow areas or the bosses of the two fixing portions on the surface of one of the fixing portions overlap or are spaced apart from each other, so that the shapes of the hollow areas or the bosses of the two fixing portions are different or the positions of the hollow areas or the bosses of the two fixing portions are different, and therefore the connecting member is mounted at a preset position in a preset posture, so as to avoid the reverse mounting of the connecting member.

In one embodiment, the protrusions or recesses are provided with chamfers provided at the notches of the top surfaces or recesses of the protrusions, the chamfers being used to guide the holders to extend into the protrusions or recesses.

In this embodiment, the chamfer is disposed on the side wall of the protrusion or the groove near the holding portion, and the chamfer is disposed on the top surface of the protrusion or the notch of the groove, so that the chamfer is used for guiding the holding portion to extend into the protrusion or for guiding the holding portion to extend into the groove, thereby making the connector easier to assemble with the conductive member.

In one embodiment, the protrusion is square in shape, and the fixing portion is attached to a side wall of the square protrusion to be fixed to the protrusion.

In one embodiment, the groove is square in shape, and the fixing portion is attached to an inner wall of the square groove to be fixed to the groove.

In one embodiment, the surface of the connecting piece facing away from the conductive piece is provided with a positioning part, and the positioning part is used for realizing a positioning function when the connecting piece is welded with the conductive piece.

In the embodiment, the positioning part is arranged on the surface of the connecting piece, which is away from the conductive piece, so that the required welding position can be accurately positioned when the connecting piece and the conductive piece are welded.

In one embodiment, the positioning portion comprises a positioning hole, a positioning column is arranged on the surface, where the conductive piece is attached to the connecting piece, of the surface, the positioning column is matched with the positioning hole in position and shape, and the positioning column is used for extending into the positioning hole to limit the relative position of the conductive piece and the connecting piece.

In this embodiment, the positioning hole is formed in the connecting piece, the positioning column is formed in the surface, attached to the connecting piece, of the conductive piece, and the positioning column is arranged in a position and shape matching with the positioning hole, so that the positioning column can extend into the positioning hole, and meanwhile, the positioning column can also abut against the inner surface of the positioning hole, so that the relative position of the conductive piece and the connecting piece is limited.

In one embodiment, the positioning hole is circular in shape and the corresponding positioning post is cylindrical in shape.

In one embodiment, the holding portion, the pre-bent section and the connecting piece are integrally formed.

In this embodiment, the fixing portion, the pre-bending section and the connecting piece are configured as an integral structure, that is, the fixing portion, the pre-bending section and the connecting piece can be directly formed by stamping the connecting piece body, so that the manufacturing process of the connecting piece can be simplified, and meanwhile, the reliability of the connecting piece is improved.

In one embodiment, the connector is made of nickel.

In the embodiment, based on the advantages of good conductivity, good welding performance, oxidation resistance and the like, the reliability of the connecting component can be improved by adopting nickel as the manufacturing connecting piece.

In one embodiment, the connection assembly further includes an adaptor fixed to the conductive member and electrically connected to the battery cell.

In this embodiment, an adaptor is disposed between the conductive member and the electrical core, so as to achieve an electrical signal transmission function between the electrical core terminal and the conductive member.

In one embodiment, the conductive member further includes a protrusion disposed at a distance from the connection portion, and one protrusion is fixed to one of the adapter members.

In this embodiment, through set up on the conductive member with connecting portion spaced projection to make a projection and an adaptor cooperation fixed, so as to guarantee the signal transmission of electric core utmost point post to the projection through the adaptor, thereby realize the signal transmission function between electric core utmost point post and the conductive member.

In one embodiment, the end of the connector not fixed to the connection portion is provided with a wiring hole for connection with the sampling harness.

In one embodiment, the wiring hole is located at one side of the connecting piece away from the conductive piece, and the fixing portion extends along the direction of the connecting piece close to the conductive piece when the conductive piece is provided with the protrusion; when the conductive piece is provided with the groove, the fixing part extends along the direction of the connecting piece away from the conductive piece.

In this embodiment, the connection hole is disposed on a side of the connection piece away from the conductive member, so as to facilitate connection of the sampling harness to the connection hole. Meanwhile, when the conductive piece is provided with the bulge, the fixing part extends along the direction that the connecting piece is close to the conductive piece, so that the fixing part can effectively clamp two sides of the bulge. When the conductive piece is provided with the groove, the fixing part extends along the direction that the connecting piece departs from the conductive piece, so that the fixing part can be effectively abutted with the inner surface of the groove.

In a second aspect, the present application provides a battery pack, where the battery pack includes a plurality of cells arranged at intervals, a sampling unit and a connection assembly according to any one of the embodiments, the sampling unit includes a sampling wire harness electrically connected with the receiver, and the connection assembly is connected between the sampling wire harness and a post of the cell, and transmits an electrical signal of the cell to the receiver through the sampling wire harness.

It can be appreciated that the battery pack provided in the second aspect of the present application may simplify the mounting process and improve the mounting efficiency because the connection assembly provided in the first aspect of the present application is adopted.

In one embodiment, the battery pack comprises at least two battery modules, each battery module is formed by connecting a plurality of electric cores in series or in parallel, and the two battery modules are connected in a bridging manner through a connecting assembly and sampled through a sampling wire harness.

In this embodiment, a plurality of battery cells are connected in series or in parallel to form a battery module, and two battery modules are connected in bridge connection through a connecting component, so that the number of components in the battery pack is reduced, and the structure of the battery pack is simplified.

In a third aspect, the present application provides a powered device, where the powered device includes the connection assembly provided in the first aspect or the battery pack provided in the second aspect.

It can be understood that, because the electric equipment provided in the third aspect of the application adopts the connection assembly provided in the first aspect of the application or the battery pack provided in the third aspect, the installation process can be simplified, and the installation efficiency can be improved.

Drawings

Fig. 1 is a schematic plan view of a battery pack according to an embodiment of the present application;

FIG. 2 is a schematic view of a partial plan view of the structure shown in FIG. 1A;

FIG. 3 is a schematic plan view of a connection assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic plan view of a connection assembly according to another embodiment of the present disclosure;

FIG. 5 is a schematic plan view of a conductive member according to an embodiment of the present disclosure;

FIG. 6 is a schematic plan view of a connector according to an embodiment of the present disclosure;

FIG. 7 is a schematic plan view of a connection assembly according to another embodiment of the present disclosure;

FIG. 8 is a schematic plan view of a conductive member according to another embodiment of the present disclosure;

FIG. 9 is a schematic plan view of a conductive member according to another embodiment of the present disclosure;

fig. 10 is a schematic plan view of a connector according to another embodiment of the present application.

Reference numerals: 200-battery pack; 201-a tray; 2011-a bottom plate; 2012-sidewalls; 202-an electric core; 2021-pole piece; 2022-housing; 2023-pole; 203-a sampling unit; 2031-a sampling harness; 2032-a receiver; 204-a battery module; a 100-connection assembly; 10-conductive elements; 11-a connection; 111-a second connection face; 12-bulge; 121-top surface; 122-outer surface; 13-grooves; 131-bottom side; 132-an inner surface; 14-bump; 15-clamping grooves; 16-chamfering; 17-positioning columns; 18-convex columns; 20-connecting piece; 21-connecting pieces; 22-a holder; 22 a-a first holding portion; 22 b-a second holding portion; 221-a first connection face; 222-hollow out area; 223-boss; 23-pre-bending the section; 24-wiring holes; 25-positioning part; 251-positioning holes; 30-adaptor.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus, directional terms are used for better, more clear description and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," "may be" or "including" as used in this application mean the presence of the corresponding function, operation, element, etc. disclosed, but not limited to other one or more additional functions, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

It is understood that the battery pack and the connection assembly of the present application may be applied to electrical devices such as vehicles. The electric equipment can also comprise a controller and a motor, wherein the controller is used for controlling the battery pack to supply power for the motor, and the electric energy provided by the battery pack can be used for realizing the working power consumption requirements of the electric equipment, such as the scenes of starting, navigation, running and the like of the vehicle. It should be noted that the vehicle related to the electric equipment in the application can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle. In other embodiments, the powered device may also be an aircraft, rocket, or other power tool, as this application is not particularly limited.

Referring to fig. 1 and fig. 2 in combination, fig. 1 is a schematic plan view of a battery pack 200 according to an embodiment of the present application; fig. 2 is a schematic view of a partial plan structure at a in fig. 1.

As shown in fig. 1 and 2, the present application provides a battery pack 200, and the battery pack 200 includes a tray 201, a battery cell 202, a sampling unit 203, and a connection assembly 100. The tray 201 includes a bottom plate 2011 and a side wall 2012, the side wall 2012 is disposed around the periphery of the bottom plate 2011, and forms a containing space with a certain volume in cooperation with the bottom plate 2011, so as to contain and protect the battery cells 202, the sampling unit 203 and the connection assembly 100. The number of the battery cells 202 is plural, and the plurality of battery cells 202 are arranged on the bottom plate 2011 at intervals. Each of the cells 202 is connected in series or parallel with each other. Each cell 202 includes a pole piece 2021, a housing 2022, and a pole piece 2023. The housing 2022 is configured to receive and protect the pole core 2021, and the pole column 2023 is located at one end of the pole core 2021 and connected to the pole core 2021 through the housing 2022.

It will be appreciated that when an external current is transmitted to the pole 2021 through the pole 2023, the pole 2021 cooperates with an electrolyte (not illustrated) to store electrical energy in the housing, thereby implementing the charging function of the battery 202; when an external circuit (not shown) controls the cell 202 to release electric energy outwards, the pole 2023 conducts the energy stored in the housing out in the form of electric current, thereby realizing the discharging function of the cell 202.

The connection assembly 100 is fixed on the bottom plate 2011 and electrically connected to the terminal 2023 of the battery 202 to collect the electrical signal of the battery 202. The sampling unit 203 includes a sampling harness 2031 and a receiver 2032, the receiver 2032 being located at an outer edge of the base 2011, the sampling harness 2031 being connected between the receiver 2032 and the connection assembly 100 to deliver the acquired electrical signals of the connection assembly 100 to the receiver 2032. The receiver 2032 analyzes, stores and exchanges the received electrical signals with external devices, so as to monitor the states of the battery cells 202 in real time, and avoid the adverse phenomena of overcharging, overdischarging, and excessive temperature of the battery cells 202.

It will be appreciated that in other embodiments, the battery pack 200 further includes a cover plate (not shown) disposed opposite the bottom plate 2011, and cooperating with the side walls 2012 and the bottom plate 2011 to form a closed accommodating space.

Please refer to fig. 3, which is a schematic plan view of a connection assembly 100 according to an embodiment of the present application, and fig. 4 is a schematic plan view of a connection assembly 100 according to another embodiment of the present application.

As shown in fig. 1 to 4, the connection assembly 100 of the present application includes a conductive member 10 and a connection member 20. The conductive member 10 includes opposite ends, one end of which is electrically connected to the terminal 2023 (see fig. 2) of the battery 202, and the other end of which is provided with a connection portion 11. The connecting piece 20 comprises a connecting piece 21 and two fixing parts 22, wherein the number of the fixing parts 22 is two, and the two fixing parts 22 are respectively arranged on two opposite sides of the connecting piece 21. The connecting piece 20 is located at one end of the conductive piece 10 provided with the connecting portion 11, and the holding portion 22 is used for maintaining the relative position between the connecting piece 20 and the connecting portion 11.

It can be appreciated that, in the connection assembly 100 of the present application, since the connection portion 11 is disposed on the conductive member 10, and the fixing portion 22 is disposed on the connection member 20 in a corresponding matching manner, the fixing portion 22 and the connection portion 11 are fixed to each other, so that a relative position between the conductive member 10 and the connection member 20 can be defined, and the conductive member 10 is prevented from being displaced relative to the connection member 20, so that a subsequent welding process between the conductive member 10 and the connection member 20 is facilitated, and the installation efficiency is improved.

It should be noted that the number and positions of the holding portions 22 in the above embodiments are described only as examples, that is, in other embodiments of the present application, the number of the holding portions 22 is not limited to two, and may be one, three, or other numbers. Meanwhile, the holding portions 22 may be not only arranged on opposite sides of the connecting piece 21, but also may be arranged on any side of the connecting piece 21, which is not particularly limited in this application.

Specifically, please refer to fig. 5 and fig. 6 in combination; fig. 5 is a schematic plan view of a conductive element 10 according to an embodiment of the present disclosure; fig. 6 is a schematic plan view of a connector 20 according to an embodiment of the present application.

As shown in fig. 1 to 6, in one embodiment, the holding portion 22 includes a first connection surface 221, and the connection portion 11 includes a second connection surface 111. The first connection surface 221 and the second connection surface 111 abut. It will be appreciated that the first connection surface 221 and the second connection surface 111 are provided in a matching manner, and the first connection surface 221 and the second connection surface 111 are abutted against each other to maintain the relative positions between the connection member 20 and the connection portion 11, so that the subsequent mounting of the connection member 20 to the conductive member 10 can be prevented from rotating with respect to the conductive member 10, while the mounting process of the conductive member 10 and the connection member 20 can be simplified, and the mounting efficiency of the conductive member 10 and the connection member 20 can be improved.

For example, the two holding portions 22 may be a first holding portion 22a and a second holding portion 22b, respectively, when the connecting piece 20 swings towards the first holding portion 22a side relative to the connecting portion 11, the first connecting surface 221 of the first holding portion 22a abuts against the second connecting surface 111 on one side of the connecting portion 11, so as to prevent the connecting piece 20 from swinging. Similarly, when the connector 20 swings towards one side of the second holding portion 22b relative to the connecting portion 11, the first connecting surface 221 of the second holding portion 22b abuts against the second connecting surface 111 on the other side of the connecting portion 11 to prevent the connector 20 from swinging. The first connection surfaces 221 of the two holding portions 22 cooperate with the second connection surfaces 111 of the connection portions 11 to prevent the connection member 20 from rotating relative to the conductive member 10.

Further, as shown in fig. 4 to 6, in one embodiment, the connection portion 11 includes a protrusion 12, and the connection piece 21 of the connection member 20 is attached to the top surface 121 of the protrusion 12. The holding portion 22 extends along the connecting piece 21 in a direction approaching the conductive member 10 and is fixedly connected with the outer surface 122 of the protrusion 12, so as to fix the connecting piece 20 to the conductive member 10. The fixing portion 22 may abut against the outer surface 122 of the protrusion 12 to achieve a fixed connection, and the fixing portion 22 may be further clamped to the outer surface 122 of the protrusion 12 to achieve a fixed connection. It should be noted that, at this time, the outer surface 122 of the protrusion 12 is the second connecting surface 111 of the connecting portion 11, and the surface of the holding portion 22 near the protrusion 12 is the first connecting surface 221.

In one embodiment, the connecting piece 20 includes a pre-bending section 23, the pre-bending section 23 is connected between the side wall of the connecting piece 21 and the holding portion 22, and the cross section of the pre-bending section 23 is arc-shaped. It can be appreciated that in the present embodiment, the pre-bending section 23 is provided at the connection between the side wall 2012 of the connecting piece 21 and the holding portion 22 as a transition structure, and the cross section of the pre-bending section 23 is provided as an arc shape, so that stress concentration can be reduced, and the risk of fracture at the connection between the side wall 2012 of the connecting piece 21 and the holding portion 22 can be reduced.

The connector 20 further includes a wiring hole 24, the wiring hole 24 being located at an end of the connector 20 remote from the conductive member 10 and on a side of the connection piece 21 remote from the conductive member 10, the wiring hole 24 being connected to a sampling harness 2031 for transmitting the collection signal to a receiver 2032 (see fig. 2 for cooperation).

In one embodiment, the protrusion 12 is square in shape, and the holding portion 22 is attached to a side wall of the square protrusion 12 to be fixed to the protrusion 12.

Referring to fig. 7 and fig. 8 in combination, fig. 7 is a schematic plan view of a connection assembly 100 according to another embodiment of the present application; fig. 8 is a schematic plan view of a conductive member 10 according to another embodiment of the present application.

As shown in fig. 7 and 8, in one embodiment, the connection portion 11 includes a groove 13, and the connection piece 21 of the connection member 20 is attached to the bottom surface 131 of the groove 13. The holding portion 22 extends along the direction of the connecting piece 21 away from the conductive member 10 and abuts against the inner surface 132 of the groove 13, so as to fix the connecting piece 20 to the conductive member 10. At this time, the inner surface 132 of the groove 13 is the second connecting surface 111 of the connecting portion 11, and the surface of the holding portion 22 adjacent to the groove 13 is the first connecting surface 221.

The connector 20 further includes a wiring hole 24, the wiring hole 24 being located at an end of the connector 20 remote from the conductive member 10 and on a side of the connection piece 21 remote from the conductive member 10, the wiring hole 24 being connected to a sampling harness 2031 for transmitting the collection signal to a receiver 2032 (see fig. 2 for cooperation).

In one embodiment, the shape of the groove 13 is square, and the holding portion 22 is attached to the inner wall of the square groove 13 to be fixed to the groove 13.

In the embodiment shown in fig. 4, the holding portion 22 has elasticity. It can be understood that, by providing the holding portion 22 with elasticity, the elastic holding portion 22 can be utilized to recover the deformation capability, so as to facilitate the installation of the conductive member 10 and the connecting member 20, and ensure the reliable abutment of the holding portion 22 and the connecting portion 11.

In one embodiment, the minimum distance between the two holding portions 22 is smaller than the width dimension of the protrusion 12, and the two holding portions 22 clamp both sides of the protrusion 12 to fix the connection member 20. It can be understood that, in the present embodiment, the protrusions 12 are provided on the basis of the conductive member 10, and since the holding portions 22 have elasticity, the minimum distance between the two holding portions 22 is set smaller than the width dimension of the protrusions 12, and the two holding portions 22 are clamped at two sides of the protrusions 12, so that the holding portions 22 and the outer surfaces 122 of the protrusions 12 are automatically pressed and fitted by utilizing the elastic deformation function of the holding portions 22, so as to fix the connecting member 20.

In the embodiment shown in fig. 7, the maximum distance between the two holding portions 22 is larger than the width dimension of the groove 13, and the two holding portions 22 abut against the inner surface 132 of the groove 13 to fix the connecting piece 20. It can be understood that, in the present embodiment, the groove 13 is provided on the basis of the conductive member 10, and since the holding portions 22 have elasticity, the maximum distance between the two holding portions 22 is set to be larger than the width dimension of the groove 13, and the two holding portions 22 are abutted against the inner surface 132 of the groove 13, so that the holding portions 22 and the inner surface 132 of the groove 13 are automatically pressed and fitted by utilizing the elastic deformation function of the holding portions 22, so as to fix the connecting member 20.

Referring back to fig. 4 to 6, in one embodiment, the conductive member 10 includes two bumps 14, and the number of bumps 14 is two. The two bumps 14 are disposed on the outer surfaces 122 on opposite sides of the bump 12, and each bump 14 extends toward a corresponding one of the holding portions 22. Each holding portion 22 includes a hollow area 222, and the positions and the number of the hollow areas 222 are correspondingly matched with those of the bumps 14, and each bump 14 extends into and abuts against one hollow area 222.

Referring back to fig. 6 to 7, in one embodiment, the conductive member 10 includes two bumps 14, and two bumps 14 are respectively disposed on inner surfaces 132 of opposite sides of the recess 13, and each bump 14 protrudes toward the corresponding holding portion 22. Each holding portion 22 includes a hollow area 222, and the positions and the number of the hollow areas 222 are correspondingly matched with those of the bumps 14, and each bump 14 extends into and abuts against one hollow area 222.

In the above embodiment, the bump 14 is disposed on the outer surface 122 of the protrusion 12 or the inner surface 132 of the recess 13, and the hollow area 222 is disposed at the position of the holding portion 22 corresponding to the bump 14, so that the bump 14 extends into and abuts against the hollow area 222, so as to prevent the connection member 20 from moving away from the conductive member 10, thereby further defining the relative positions of the conductive member 10 and the connection piece.

As shown in fig. 9 and 10, in one embodiment, the conductive member 10 includes a slot 15, the slot 15 being provided on an outer surface 122 on opposite sides of the protrusion 12. The holding portion 22 includes bosses 223, and the positions and the number of the bosses 223 are correspondingly matched with those of the clamping grooves 15, and each boss 223 is used for extending into and abutting against one clamping groove 15. It will be appreciated that in this embodiment, the outer surface 122 of the projection 12 is recessed in a direction away from the retaining portion 22 to form the card slot 15. Meanwhile, the boss 223 is arranged at the position of the holding part 22 corresponding to the clamping groove 15 in a matching way, and the clamping groove 15 is mutually abutted and matched with the boss 223 so as to prevent the connecting piece 20 from moving towards the direction away from the conductive piece 10, thereby further limiting the relative positions of the conductive piece 10 and the connecting piece.

It should be noted that, in an embodiment in which the conductive member 10 is provided with the groove 13, the inner surface 132 of the groove 13 may be recessed in a direction away from the holding portion 22 to form the clamping groove 15, which may also achieve the effects of the above embodiment.

In one embodiment, when the conductive member 10 includes the bump 14, the projected portions of the hollow portions 222 of the two holding portions 22 on the surface of one of the holding portions 22 overlap or are spaced apart from each other. In another embodiment, when the conductive member 10 includes the card slot 15, the projections 223 of the two holding portions 22 overlap or are spaced apart from each other in the projection portion of one of the holding portions 22.

It can be appreciated that, in the above embodiment, based on the conductive member 10 including the bump 14 or the groove 13, the projection portions of the hollow portions 222 or the boss 223 of the two holding portions 22 on the surface of one of the holding portions 22 are overlapped or spaced apart, that is, the shapes of the hollow portions 222 or the boss 223 of the two holding portions 22 are set to be different or the positions of the hollow portions 222 or the boss 223 of the two holding portions 22 are set to be different, so that the connecting member 20 can be mounted at a predetermined position in a predetermined posture, thereby avoiding the reverse mounting of the connecting member 20.

As shown in FIG. 4, in one embodiment, the boss 12 is provided with a chamfer 16, the chamfer 16 being provided on a top surface 121 of the boss 12. It will be appreciated that in this embodiment, the chamfer 16 at the top surface 121 of the boss 12 may be used to guide the retainer 22 into the boss 12, thereby making the connector 20 easier to assemble with the conductive member 10.

It should be noted that, in another embodiment, when the conductive member 10 is provided with the groove 13 to fix the connection member 20, the chamfer 16 may be provided at a notch of the groove 13 to guide the retaining portion 22 to extend into the groove 13, which also makes the assembly process of the connection member 20 and the conductive member 10 easier.

As shown in fig. 3, in one embodiment, the surface of the connecting piece 21 facing away from the conductive element 10 is provided with a positioning portion 25. It will be appreciated that in this embodiment, the locating portion 25 is provided on the surface of the connector 20 facing away from the connecting piece 21, so that the required weld can be identified and accurately located by means of the locating portion 25 when the connector 20 and the conductive member 10 are welded.

In the embodiment shown in fig. 3, the positioning portion 25 includes a positioning hole 251, a surface of the conductive member 10, which is attached to the connecting piece 21, is provided with a positioning post 17, the positioning post 17 is disposed in a matching manner with the positioning hole 251, and the positioning post 17 can extend into the positioning hole 251. It can be appreciated that in the present embodiment, the positioning hole 251 is provided in the connecting member 20, and the positioning post 17 is provided on the surface of the conductive member 10 abutting against the connecting piece 21 in a matching manner, so that the positioning post 17 can extend into the positioning hole 251 and abut against the inner surface of the positioning hole 251, thereby defining the relative position of the conductive member 10 and the connecting member 20.

In one embodiment, the positioning hole 251 is circular in shape and the corresponding positioning post 17 is cylindrical in shape.

It should be noted that the structure of the positioning portion 25 is only described as an example, and in other embodiments, the positioning portion 25 may be disposed on the surface of the connecting member 20 facing away from the connecting piece 21 in any other manner, for example, may be a positioning point or may be another planar pattern, so long as the identification function can be implemented to facilitate positioning.

In one embodiment, the holding portion 22, the pre-bent section 23 and the connecting piece 21 are integrally formed. It can be understood that the fixing portion 22, the pre-bending section 23 and the connecting piece 21 are integrally formed, that is, the fixing portion 22, the pre-bending section 23 and the connecting piece 21 can be directly formed by punching the connecting piece 20, so that the manufacturing process of the connecting piece 20 can be simplified, and meanwhile, the reliability of the connecting piece 20 is improved.

In one embodiment, the connector 20 is made of nickel. It can be appreciated that, in the present embodiment, the reliability of the connection assembly 100 of the present application can be improved by using nickel as the connection member 20 based on the advantages of good electrical conductivity, good soldering property, oxidation resistance, etc.

Referring back to fig. 2, in one embodiment, the connection assembly 100 further includes an adaptor 30, wherein one end of the adaptor 30 is fixedly connected to the conductive member 10, and the other end is connected to the terminal 2023 of the battery 202, so as to realize the electrical signal transmission function between the battery 202 and the conductive member 10.

Referring back to fig. 3, in one embodiment, the conductive member 10 further includes a post 18. The protruding columns 18 are arranged at intervals from the connecting part 11, and one protruding column 18 is matched and fixed with one adapter 30. It can be understood that in the present embodiment, the protruding columns 18 spaced from the connecting portion 11 are disposed on the conductive member 10, and one protruding column 18 is matched and fixed with one adaptor 30, so as to ensure that the electrical signal of the terminal 2023 of the battery cell 202 is transmitted to the protruding columns 18 through the adaptor 30, thereby realizing the electrical signal transmission function between the terminal 2023 of the battery cell 202 and the conductive member 10.

Referring back to fig. 1 and 2, in one embodiment, the battery pack 200 includes four battery modules 204, and each battery module 204 is composed of a plurality of battery cells 202 connected in series or parallel. And the two battery modules 204 are bridged by one connecting assembly 100 while sampling is performed by the sampling harness 2031. It is understood that the provision of the two battery modules 204 connected by one connection assembly 100 can reduce the number of components in the battery pack 200, thereby simplifying the structure of the battery pack 200. It should be noted that the number of battery modules 204 and the connection relationship with the connection assembly 100 in the above embodiment are described as examples only.

It should be appreciated that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto. Those skilled in the art will recognize that the full or partial flow of the embodiments described above can be practiced and equivalent variations of the embodiments of the present utility model are within the scope of the appended claims.

Claims (21)

1. A connection assembly for connection between a sampling harness and a battery cell, comprising:

the conductive piece is used for being electrically connected with the electric core and is provided with a connecting part;

the connecting piece is used for connecting the connecting part and the sampling wire harness, one end, connected with the connecting part, of the connecting piece is provided with a fixing part, and the fixing part is used for keeping the relative position of the connecting piece and the connecting part.

2. The connection assembly according to claim 1, wherein the connection member includes two holding portions and a connection piece connected between the two holding portions, the two holding portions being connected to the connection portion, respectively.

3. The connection assembly of claim 2, wherein the retention portion includes a first connection face and the connection portion includes a second connection face, the first connection face and the second connection face abutting.

4. A connection assembly according to claim 3, wherein the connection portion comprises a protrusion, two of the holding portions being located on both sides of the protrusion to secure the connection member; or alternatively, the first and second heat exchangers may be,

the connecting part comprises a groove, and the two fixing parts respectively prop against the inner surface of the groove to fix the connecting piece.

5. The connection assembly of claim 4, wherein the retention portion is resilient.

6. The connection assembly of claim 5, wherein the connector includes a pre-bent section connected between the connecting tab and the retainer.

7. The connection assembly of claim 6, wherein the connection portion includes a protrusion, and a minimum distance between two of the retention portions is less than a width dimension of the protrusion; or, the connecting portion includes a groove, and a maximum distance between the two holding portions is greater than a width dimension of the groove.

8. The connection assembly according to claim 4, wherein the conductive member includes a projection provided on an outer surface of the projection or an inner surface of the recess, the projection protruding toward the holding portion;

the fixing part comprises a hollowed-out area, the position of the hollowed-out area is correspondingly matched with the position of the protruding block, and the protruding block is used for extending into and propping against the hollowed-out area so as to limit the relative position of the conductive piece and the connecting piece.

9. The connection assembly according to claim 8, wherein the projected portions of the hollowed-out areas of two holding parts on the surface of one holding part overlap or are spaced apart from each other.

10. The connection assembly of claim 4, wherein the conductive member comprises a clamping groove provided on an outer surface of the protrusion or an inner surface of the groove, the clamping groove being recessed toward the inner surface of the protrusion or the groove;

the fixing part comprises a boss, the position of the boss is correspondingly matched with the position of the clamping groove, and the boss is used for extending into and propping against the clamping groove so as to limit the relative position of the conductive piece and the connecting piece.

11. The connection assembly according to claim 10, wherein the projections of the bosses of two holders on one of the holder surfaces overlap or are spaced apart from each other.

12. A connection assembly according to any one of claims 4 to 11, wherein the projection or the recess is provided with a chamfer provided on a top surface of the projection or a notch of the recess, the chamfer being for guiding the holder to extend into the projection or the recess.

13. The connection assembly according to claim 12, wherein the protrusion is square in shape, and the holding portion is fitted to a side wall of the square protrusion to be fixed to the protrusion; or alternatively, the first and second heat exchangers may be,

the shape of the groove is square, and the fixing part is attached to the inner wall of the square groove so as to be fixed in the groove.

14. The connection assembly according to any one of claims 2-11, wherein a surface of the connection piece facing away from the conductive element is provided with a positioning portion for realizing a positioning function when the connection piece is welded with the conductive element.

15. The connector assembly of claim 14, wherein the positioning portion includes a positioning hole, a positioning post is disposed on a surface of the conductive member attached to the connecting piece, the positioning post is disposed in a position and shape matching with the positioning hole, and the positioning post is configured to extend into the positioning hole to define a relative position of the conductive member and the connecting piece.

16. The connection assembly of claim 15, wherein the locating hole is circular in shape and the corresponding locating post is cylindrical in shape.

17. The connection assembly according to any one of claims 2-11, further comprising an adapter member secured to the conductive member and adapted to be electrically connected to the electrical cell.

18. The connector assembly of claim 17, wherein said conductive member further comprises posts spaced from said connector, one of said posts being cooperatively secured to one of said adapters.

19. A battery pack comprising a battery cell, a sampling harness, and the connection assembly of any one of claims 1-18, the connection assembly being connected between the sampling harness and the battery cell.

20. The battery pack according to claim 19, wherein the battery pack comprises at least two battery modules, each battery module is composed of a plurality of electric cores in series or in parallel, and the two battery modules are connected in a bridging manner through the connecting assembly and sampled through the sampling wire harness.

21. A powered device comprising a battery pack as claimed in claim 19 or 20.